Scan Tool Data Definitions. Chevrolet PJJ 2000

For 1990-2009 cars

The Data Display function contains lists of ABS and ETS data parameters. A brief description of all ABS and ETS data parameters available on the scan tool are listed below. The list is arranged in alphabetical order.

ABS Active: The scan tool displays Yes or No - The scan tool displays Yes when the ABS is active. This scan tool displays No during normal vehicle operation.
ABS Relay Command: The scan tool displays On or Off - The scan tool displays On during vehicle operation. The EBCM commands the ABS relay On when Ignition positive voltage is present.
ABS Relay Feedback: The scan tool displays On or Off - The scan tool displays On during vehicle operation.
ABS Warning Lamp: The scan tool displays Off or On - The scan tool displays whether or not the ABS warning indicator is currently being commanded ON.
Brake Fluid Level: The scan tool displays Low or Normal - The scan tool displays if the brake fluid level is below the standard operating level.
Brake Switch Status: The scan tool displays Applied or Released - The scan tool displays the state of the brake switch.
EBCM to PCM Requested: The scan tool displays 0-100 percent - The scan tool displays the duty cycle of the Delivered Torque PWM signal. The duty cycle of the signal is used to transmit how much torque the EBCM is requesting the PCM to deliver. Normal values are between 10 and 90 percent duty cycle. The signal should be at 90 percent duty cycle when ETS is not active and at lower values (approximately 10 percent) when ETS is active.
ETS Active: The scan tool displays Yes or No - The scan tool displays whether or not the vehicle is currently in an ETS event.
ETS Active Lamp: The scan tool displays Off or On - The scan tool displays if the ETS is currently being commanded ON.
ETS Disable Lamp: The scan tool displays Off or On - The scan tool displays the commanded state of the ETS disable indicator.
ETS Status: The scan tool displays Off or On - The scan tool displays the state of the ETS based on if the driver has disabled ETS by pressing the ETS switch, or if the ETS has been disabled due to a malfunction.
ETS Warning Lamp: The scan tool displays Off or On - The scan tool displays if the TRAC OFF indicator is currently being commanded ON.
Ignition Voltage: The scan tool displays 0-17 Volts - The scan tool displays the level of ignition positive voltage at the EBCM.
Left Front Wheel Speed: The scan tool displays 0-255 km/h or 0-158 mph - The scan tool displays the actual speed of the left front wheel.
Left Rear Wheel Speed: The scan tool displays 0-255 km/h or 0-158 mph - The scan tool displays the actual speed of the left rear wheel.
LF Inlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LF inlet solenoid valve.
LF Outlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LF outlet solenoid valve.
LR Inlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LR inlet solenoid valve.
LR Outlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the LR outlet solenoid valve.
PCM to EBCM Delivered: The scan tool displays 0-100 percent - The scan tool displays the duty cycle of the Requested Torque PWM signal. The duty cycle of the signal is used to transmit how much engine torque the PCM is delivering. Normal values are between 10 and 90 percent duty cycle. The signal is at low values (approximately 10 percent) at idle and at higher values under driving conditions.
Pump Motor Commanded State: The scan tool displays On or Off - The scan tool displays the commanded state of the pump motor.
Pump Motor Feedback State: The scan tool displays On or Off - The scan tool displays the actual state of the pump motor.
Right Front Wheel Speed: The scan tool displays 0-255 km/h or 0-158 mph - The scan tool displays the actual speed of the right front wheel.
Right Rear Wheel Speed: The scan tool displays 0-255 km/h or 0-158 mph - The scan tool displays the actual speed of the right rear wheel.
RF Inlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RF inlet solenoid valve.
RF Outlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RF outlet solenoid valve.
Rough Road Parameter: The scan tool displays 0-1g - The scan tool displays the EBCM calculation of the road surface roughness. This information is sent to the PCM over the class 2 serial data line. The PCM uses this information for misfire detection.
RR Inlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR inlet solenoid valve.
RR Outlet Valve Solenoid: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR outlet solenoid valve.
Switched Battery Voltage: The scan tool displays 0-17 Volts - The scan tool displays the level of the internal EBCM switched battery voltage available to the solenoid valves and pump motor.
Vehicle Speed: The scan tool displays 0-255 km/h or 0-158 mph - This parameter displays the vehicle speed. The Powertrain Control Module (PCM) receives reference pulses from the Vehicle Speed Sensor (VSS) and converts them into km/h or MPH for display.